Table 1.
Histomorphometry
| Bone | Marrow | Fibrous | |
|---|---|---|---|
| Interface | |||
| Control | 10 (7–12) | 77 (70–88) | 8 (0–21) |
| PTH | 16 (11–20)1) | 74 (56–80) | 7 (0–35) |
| Inner gap | |||
| Control | 13 (11–18) | 82 (77–85) | 2 (0–7) |
| PTH | 33 (26–36)*** | 60 (53–69)** | 3 (0–14) |
| Outer gap | |||
| Control | 10 (6–14) | 90 (86–94) | 0 (0–0) |
| PTH | 27 (20–37)** | 73 (63–80)** | 0 (0–0) |
| Intact bone | |||
| Control | 22 (19–23) | 78 (77–81) | 0 (0–0) |
| PTH | 22 (18–30) | 78 (70–82) | 0 (0–0) |
Implant inserted in concentric gap 1 mm in cancellous bone. PTH treatment versus control. Bone, marrow-like and fibrous tissue at implant surface (surface fraction), concentric region divided in two of inner gap, outer gap (500 μm), and intact bone outside the gap (1,000 μm) (volume fraction). PTH n = 8, control n = 10. Mann–Whitney test, median, interquartile range, ** P < 0.01, *** P < 0.001, 1) P = 0.07, PTH compared to control within region